#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/wait.h>
int g = 1;
int main()
{
    char *a[] = {"./test",
                 NULL};
    int l = 2;
    printf("main : %d is running.\n", getpid());
    execve("./test", a, NULL);
    printf("after execve.\n");
    return 0;
}